CN110: Docker Swarm Application Essentials

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About this Course

In this course, you’ll learn what a containerized application looks like when orchestrated by Docker Swarm. We’ll cover scheduling workloads across a cluster, networking stateless and stateful applications, provisioning dynamic configuration and persistent storage, and scaling highly available applications in this course intended to set a strong foundation in orchestration for all technical roles.

Audience Profile

  • Motivations: Develop, operate or manage scalable containerized applications orchestrated by Docker Swarm
  • Roles: General technical audiences & IT professionals

At Course Completion

  • Setting up and configuring a Swarm
  • Deploying workloads on Swarm
  • Networking Swarm workloads
  • Provisioning dynamic configuration
  • Provisioning persistent storage
  • Application rollout and upgrade
  • Advanced scheduling control

Outline

Lab Requirements

  • Laptop with WiFi connectivity
  • Attendees should have the latest Chrome or Firefox installed, and a free account at strigo.io

Course Objectives

Setting up and configuring a Swarm

  • Operational priorities of container orchestration
  • Containerized application architecture
  • Swarm scheduling workflow & task model
  • Automatic failure mitigation
  • Swarm installation & advanced customization

Deploying workloads on Swarm

  • Defining workloads as services
  • Scaling workloads
  • Container scheduling control
  • Rolling application updates and rollback
  • Application healthchecks
  • Application troubleshooting
  • Deploying applications as Stacks

Networking Swarm workloads

  • Swarm service discovery and routing implementation
  • Routing strategies for stateful and stateless workloads
  • Swarm ingress traffic

Provisioning dynamic configuration

  • Application configuration design
  • Environment variable management
  • Configuration file management
  • Provisioning sensitive information

Provisioning persistent storage

  • Storage backend architecture patterns
  • NFS backed Swarms

Monitoring Swarm

  • What to monitor in production-grade Swarms
  • Potential Swarm failure modes & mitigations
  • Swarm workload monitoring

Prerequisites

  • Familiarity with the Bash shell
  • Filesystem navigation and manipulation
  • Command line text editors like vim or nano
  • Common tooling like curl, wget and ping
  • Familiarity with YAML and JSON notation
  • CN100 course or equivalent experience